Abstract
The pulse capacitor charging power supply is a key device in the pulse power technology. To study the higher precision high voltage pulse capacitor charging power supply, the paper analyzes the transfer function and its voltage and current transfer characteristics based on a novel double resonance topology. There are two resonance points in the double resonance circuit. According to this characteristic, a frequency modulation control method is proposed. That is, the charging phase and the high voltage holding phase, the first phase adopts the series resonant working mode, and the high voltage holding phase reduces the switching frequency to approach the second resonance point, thereby realizing dynamic compensation of the pulse capacitor self-discharge voltage drop, so that the charging accuracy and a large increase in high voltage stability of pulse capacitance at the same time can be ensured. Based on Matlab/simulink, the simulation model is built to verify the correctness of the frequency modulation method of the proposed dual resonance topology.
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